This well cleaner breaks down mineral buildup at the source. Using highly concentrated acid granules the 110 cleans the entire well in contact with standing water. Unlike muriatic acid, which eats metal and over time destroys your well; its specially formulated Sulfamic Acid is safe to use on all well materials. Specially created for the medium to large diameter wells, this potent well cleaner can be used on your personal, irrigation, or municipal wells. Designed with the everyday user in mind, the pH color indicator makes it easy for anyone to see if the water is still acidic or not.